Inner diameter: approximately 15.8 cm Bead size: approximately 14.7 mm - 15.8 mm Please note that there may be slight variations. ⚠ Some images appear with a strong blue color. Images 1 and 2 show the closest colors. No appraisal report is included! This is the same grade as ① currently on sale. The supplier called it "blue sagenitic quartz," but I was concerned, so I had it appraised. Appraisal completed. Please check images 15 and 16. Colored material is used. There are small holes in the quartz, and the colored material is used to fill and seal them. The colored material is dyed, and if a large amount is used, it will be identified as dyed, but in this case, it is considered natural quartz because the amount used is small (trace amounts). Please check image 14. (This is not from the beads incorporated in this bracelet) It is almost not present, but it is rarely seen. Other colors and inclusions are natural. Spherulitic Spherical The pale blue color with dumortierite in granular form is cute and rare, I think. As it is a natural stone, there are cracks, inclusions, natural dents, black spots, color unevenness, and fine scratches. Natural stone Natural stone bracelet Dumortierite in quartz Spherulitic dumortierite in quartz Rare stone Power stone